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首页> 外文期刊>Animal Reproduction >Simultaneous umbilical blood flow during normal pregnancy in sheep and goat foetuses using non-invasive colour Doppler ultrasound
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Simultaneous umbilical blood flow during normal pregnancy in sheep and goat foetuses using non-invasive colour Doppler ultrasound

机译：非侵入性彩色多普勒超声在正常妊娠期间绵羊和山羊胎儿的脐血同时流动

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The characteristics of umbilical blood flow (UM) was investigated using 18 (25 foetuses) pregnant ewes and 20 (41 foetus) pregnant goats transrectal non-invasive color Doppler ultrasonographic examinations were done frequently between 2 and 8 week after breeding and then transabdominally until parturition. Colour Doppler velocimetery includes blood flow volume (BFV), time averaged maximum velocity (TAMV), resistance index (RI), pulsatility index (PI), time average of mean (TAMEAN) and impedance of blood flow (PS/ED or AB ratio). Also a qualitative evaluation of UM blood flow indicating increases (P 0.001) in BFV, TAMV and TAMEAN were observed until 19 week of pregnancy in foetuses of sheep and goats and then those values decreased (P 0.001) from 19 week until parturition. Conversely, UM-PI, RI and PS/ED decreased (P 0.002- 0.01) until 19 week and then increased (P 0.01-0.0001). The umbilical artery BFV increased (P 0.0001) during pregnancy from 7.27 ± 0.82 ml/min in sheep vs. 4.96 ± 0.54 ml/min in goats at 6 week of gestation to 700.51 ± 31.05 ml/min (~100 fold) in sheep vs. 665.56 ± 48.22 ml/min (~133 fold) in goats at 19 week and then decreased (P 0.0001) to 350.561 ± 72.15 ml/min in sheep vs. 215.17 ± 35.06 ml/min in goats at 20 week. The absence of end diastolic velocity (EDV) of umbilical artery blood flow was detected in both species between 4 and 12 week of pregnancy. Results of this study clearly show that the non-invasive colour Doppler sonography can be used successfully to assess umbilical blood flow in foetuses of pregnant sheep and goats. These may provide guidelines for assessing the state of intrauterine fetal growth retardation in pregnancies of sheep and goats.
机译：在繁殖后2至8周内，频繁进行经直肠非侵入性彩色多普勒超声检查，检查了18只（25胎儿）母羊和20只（41胎儿）母羊的脐血流量（UM）特征，然后经腹直至分娩。彩色多普勒速度计包括血流量（BFV），时间平均最大速度（TAMV），阻力指数（RI），搏动指数（PI），平均时间平均值（TAMEAN）和血流阻抗（PS / ED或AB比） ）。还对UM血流进行了定性评估，表明观察到直到妊娠19周为止，绵羊和山羊胎儿的BFV，TAMV和TAMEAN均增加（P <0.001），然后从19周到分娩时这些值下降（P <0.001）。相反，直到19周，UM-PI，RI和PS / ED下降（P <0.002- 0.01），然后上升（P <0.01-0.0001）。妊娠期间的脐动脉BFV从绵羊的7.27±0.82 ml / min升高到妊娠期的6周的山羊的4.96±0.54 ml / min（P <0.0001），到绵羊的700.51±31.05 ml / min（〜100倍）与19周时山羊的665.56±48.22 ml / min（〜133倍）相比，然后在绵羊中下降（P <0.0001）至350.561±72.15 ml / min，而20周时山羊为215.17±35.06 ml / min。在妊娠的4至12周之间，这两种动物均未检测到脐动脉血流舒张末期速度（EDV）。这项研究的结果清楚地表明，无创彩色多普勒超声可以成功地用于评估孕妇绵羊和山羊胎儿的脐血流量。这些可以为评估绵羊和山羊妊娠子宫内胎儿生长发育迟缓的状态提供指导。

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